Out of Our Minds, by Ken Robinson should be your new best source when you think about creativity. I've recommended it before but just in case you haven't read it yet, here are his three roles and nine principles for creative leaders - along with a few of my own questions, in italics.
The success of your business or organization, as well as your own personal growth depends on creativity. It's not just for the gifted few. It's a skill and a process you can learn and develop.